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a ti-al 3 Preparation method of hollow sandwich structure of ti layered composite material

A layered composite material, ti-al3ti technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve difficult material performance flexible regulation, difficulty of Ti layered composite material, Ti layered composite material layer spacing, The layer thickness ratio is difficult to control and other problems, so as to improve the manufacturing efficiency and reduce the cost.

Active Publication Date: 2020-02-11
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Preparation of Ti-Al by Existing Composite Method 3 Ti layered composites have the problem of difficult control of layer spacing and layer thickness ratio, so it is difficult to flexibly adjust the performance of the material. If Ti-Al with complex curved surface shape is prepared 3 Ti layered composites are more difficult
Moreover, the existing preparation methods are difficult to combine with superplastic forming / diffusion bonding technology to make Ti-Al 3 Fabrication of Ti layered composites and shaping of hollow structures in one process

Method used

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  • a ti-al <sub>3</sub> Preparation method of hollow sandwich structure of ti layered composite material
  • a ti-al <sub>3</sub> Preparation method of hollow sandwich structure of ti layered composite material
  • a ti-al <sub>3</sub> Preparation method of hollow sandwich structure of ti layered composite material

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Effect test

Embodiment 1

[0049] Specifically, the Ti-Al 3 The preparation method of Ti layered composite material hollow sandwich structure, such as figure 1 shown, including:

[0050] 11) Select Ti foil, Al foil and titanium alloy sheet with the same size, and clean the surface.

[0051] 12) Apply solder stop flux on the upper and lower sides of the titanium alloy sheet according to the designed pattern. Such as image 3 As shown, the graphics of the design are determined according to the internal structure and shape of the formed composite material.

[0052] 13) Place the titanium alloy sheet coated with solder stop flux between two layers of Ti foil, and then alternately stack Al foil and Ti foil on both sides. The total thickness of one side of the stack should be the same as the thickness of the middle titanium alloy sheet Large, and the outermost layer is Ti foil or titanium alloy sheet coated with solder stop flux. Such as figure 2 As shown, the titanium alloy thin plate 1 is placed in t...

Embodiment 2

[0061] Specifically, the Ti-Al 3 The preparation method of Ti layered composite material hollow sandwich structure, such as Figure 9 shown, including:

[0062] 21) Select Ti foil, Al foil and titanium alloy sheet with the same size, and clean the surface.

[0063] 22) Take a titanium alloy thin plate coated with solder stop flux according to the designed pattern, and attach the solder stop surface to another titanium alloy thin plate of the same specification without solder stop flux. The graphic of the design is determined according to the internal structure and shape of the formed hollow structure.

[0064] 23) Seal the edge of the laminated titanium alloy sheet and leave an inner airway on the side, and weld the ventilation pipe at the inner airway.

[0065] 24) Place the laminated titanium alloy sheet between two layers of Ti foil, and then alternately stack Al foil and Ti foil on both sides, and the total thickness of one side of the stack should be the same as or sli...

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Abstract

The invention provides a preparation method of a Ti-Al3Ti laminar composite hollow sandwich structure. The preparation method of the Ti-Al3Ti laminar composite hollow sandwich structure is characterized in that Ti foil, Al foil and a titanium alloy sheet which are stacked in a preset sequence are treated through a pneumatic hot-press compounding technique, and the Ti-Al3Ti laminar composite hollowsandwich structure is prepared through a superplastic formation / diffusion connection technique. In the technological process of preparing a Ti-Al3Ti laminar composite through the pneumatic hot-presscompounding technique, formation and preparation of the Ti-Al3Ti laminar composite hollow sandwich structure are completed in the same process through the superplastic formation / diffusion connection technique; and by adoption of the preparation method, the cost can be effectively reduced, and preparation efficiency is improved. In addition, the performance of the material can be controlled by controlling the interlayer spacing and the layer thickness ratio of the Ti-Al3Ti laminar composite.

Description

technical field [0001] The invention relates to the technical field of composite material forming, in particular to a Ti-Al 3 A method for preparing a hollow sandwich structure of a Ti layered composite material. Background technique [0002] The laminated structure of the nacre in the shell is the source of its high fracture toughness. People simulate this structure to design a layered composite material, which has the advantages of two or more combined materials, and its performance is obviously better than that of the corresponding single material. In several current research fields, metal-intermetallic compound layered composites are due to their superior high-temperature toughness, creep resistance, low-temperature fracture strength, fracture toughness, oxidation resistance during thermal cycling, comparative The thermodynamic stability of the microstructure at high temperatures has attracted much attention in the aerospace field, such as aluminum-based composite mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K28/00
CPCB23K28/003
Inventor 付明杰盖鹏涛
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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